cylindrical spur gear

例句：

1. 1. The newcar has a cylindricalspur gear that makes it easy to startand accelerate.
   这款新车配备了圆柱形的尖齿轮，使得启动和加速变得轻松。
2. 2. The old machine had a cylindrical spur gear that was difficultto replace.
   旧机器有一个圆柱形的尖齿轮，很难更换。
3. 3. Theengineer designed the gear witha cylindricalspur gear to improve efficiency.
   工程师设计了带有圆柱形尖齿轮的齿轮，以提高效率。